Social anxiety is the fear of being judged and evaluated negatively by other people, leading to feelings of inadequacy, inferiority, embarrassment, humiliation, and depression.
How long does it take for transdermal Fentanyl patch to start working from time of application? It depends on the user, but typically between 3-6 hours after you put it on you'll really start to feel the effects, and 48-72 hours for full dosage delivery.
The effects of drugs are measured in half-life which is the amount of time it takes for half of the drug dosage to be eliminated from your system. The fentanyl transdermal system (Duragesic patch) has a half-life of 17 hours.It is strongly recommended that patients not combine other opiods (like Percocet) with the patch, as this can result in an overdose. If her symptoms continue she should notify her doctor.Source(s): http://www.rxlist.com/cgi/generic/fentan...est Answer: Hi, Fentanyl has a half-life of about 7 hours (ie after 7 hours, half the drug remains. After another 7 hours, half of that ....etc). But the patches work by releasing fentanyl into body fats, which then slowly release the drug into the blood stream over 72 hours.